Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F10%3A00440417" target="_blank" >RIV/68081723:_____/10:00440417 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1742-6596/240/1/012091" target="_blank" >http://dx.doi.org/10.1088/1742-6596/240/1/012091</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/240/1/012091" target="_blank" >10.1088/1742-6596/240/1/012091</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content

Popis výsledku v původním jazyce

An evolution of microstructure has been investigated with increasing compression creep strain in intermetallic alloys Ti-48Al-2Cr-2Nb-1B (alloy Nb2) and Ti-46Al-7Nb-0.6Cr-0.2Ni-0.1Si (alloy Nb7) loaded to 350 MPa at 973 K. Scanning electron microscopy and transmission electron microscopy analysis focused on individual deformation modes and on the phase stability of the alloys. Dislocation densities and deformation twinning characteristics were systematically evaluated for strains up to 0.38. Results ofthese quantitative studies showed that the evolution of total and non-zero < c >-component dislocation densities with strain was similar for all the investigated materials in spite of relevant differences in the initial gamma/alpha 2 microstructures. However, the spacing between deformation twins seemed to scale with the creep strength of the two alloys. These results are discussed in terms of the fundamental deformation modes and their contributions to the strain accumulation kinetics d

Název v anglickém jazyce

Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content

Popis výsledku anglicky

An evolution of microstructure has been investigated with increasing compression creep strain in intermetallic alloys Ti-48Al-2Cr-2Nb-1B (alloy Nb2) and Ti-46Al-7Nb-0.6Cr-0.2Ni-0.1Si (alloy Nb7) loaded to 350 MPa at 973 K. Scanning electron microscopy and transmission electron microscopy analysis focused on individual deformation modes and on the phase stability of the alloys. Dislocation densities and deformation twinning characteristics were systematically evaluated for strains up to 0.38. Results ofthese quantitative studies showed that the evolution of total and non-zero < c >-component dislocation densities with strain was similar for all the investigated materials in spite of relevant differences in the initial gamma/alpha 2 microstructures. However, the spacing between deformation twins seemed to scale with the creep strength of the two alloys. These results are discussed in terms of the fundamental deformation modes and their contributions to the strain accumulation kinetics d

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

15th International Conference on the Strength of Materials (ICSMA-15)

ISBN

—

ISSN

1742-6588

e-ISSN

—

Počet stran výsledku

6

Strana od-do

"Art. No. 012091"

Název nakladatele

IOP Publishing

Místo vydání

Bristol

Místo konání akce

Dresden

Datum konání akce

16. 8. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000286515800091